JEE Scores

Yes, you have a chance to get admission in it.

Hello Balaji!
Yes you can get a seat at Sastra University, Thanjavur. You have a good score which is enough to get a seat. But I'm not sure which course you can get.
Your percentage of marks in board exams and the marks in JEE are used to determine your admission. Your scores will be converted into percentile and the ranks will be put as follows:
91(0.75)+55(0.25)=82 . On this basis you will be placed on a rank.
The last date to apply is June 10 and you need to apply through stream 1 at www.sastra.edu
All the best!

I depends upon your JEE Mains score, along with your state boards, because JEE Advanced score is just for getting admission in IITs, NITs, IIITs.

Sorry to say but it is difficult to get admission in NITs for you.
Chances are very less. Apply for JOSSA and perhaps, you can get an admission by luck.

Check out the link below and click on the link below now college cut-off:
https://www.shiksha.com/b-tech/resources/jee-mains-cut-off-predictor

Your rank is too low. Try private colleges as there is no hope in government colleges.

According to me, you got good marks in 12th board.
first of all fill the registration form of reap for counselling, I think you can get admission in government college for B.Tech if you not got admission in any government college then according to me you should drop this year and prepare hard for crack JEE next year. I think, you can do it because you are intelligent.
Best of luck for future.

Yes you can. All the best!